JP2003170940A - Synthetic resin pallet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a synthetic resin pallet whose flection can be suppressed when a load is applied by reducing a span between non-slip members while mounting the members on a position with firm strength. <P>SOLUTION: The four-way synthetic resin pallet 6 comprises a surface region 1 and a rear region 2, which are coupled by a corner cylindrical beam 3 for coupling corners of the regions 1 and 2 with each other, an intermediate cylindrical beam 3 for coupling peripheral intermediate regions of the regions 1 and 2 with each other, and a center cylindrical beam 3 for coupling centers of the regions 1 and 2 with each other, while fork insertion holes 4 are formed among the beams 3 in a parallel cross pattern. The pallet 6 is equipped with an attaching plate 20 at a position toward the center beam 3 within the corner beam 3 and on a rear side position of the corner beam 3, and in addition a non-slip member 21 for grounding the attaching plate 20 is attached. At least a portion of a periphery of the attaching plate 20 and the surface region 1 are integrally coupled via reinforcing longitudinal walls 23 and 25. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a pallet made of synthetic resin, and more particularly to a structure of a portion for attaching a grounding non-slip member to the pallet.

[0002]

2. Description of the Related Art In a pallet made of synthetic resin of this kind, a front surface portion and a back surface portion are cylindrical girders at the corners connecting the corners of the front surface portion and the back surface portion. , Between the cylindrical girders, which are connected by an intermediate cylindrical girder that connects the intermediate parts around the front surface and the back surface and a central cylindrical girder that connects the center parts of the front surface and the back surface. The fork insertion hole is formed in a cross beam shape.

When a pallet having such a structure is placed with its back surface facing down, non-slip members are attached to the four corners of the back surface of the pallet to prevent slippage and to contact the ground. It is provided on the back side of the tubular girders at the four corners of the relatively strong pallet, but is provided on the back side of the tubular girders at the four corners at a position offset to the corners of the outer periphery of the pallet.

However, when the anti-slip members b are attached to the outer corners of the pallet a, the span S between the anti-slip members b at both ends becomes wider as shown in FIG. If a load is placed on the pallet and a load is applied to the central portion as shown by the arrow, there is a problem that the pallet a is largely bent as shown in FIG. Further, since the pallet a is largely bent as described above, when a load is placed near the center of the pallet a, there is a problem that the outer peripheral portion of the pallet a is lifted by the reaction.

The present invention has been made in view of the above-mentioned points, and a pallet when a load is applied by reducing the span between the anti-slip members while attaching the anti-slip member at a position where strength is strong. An object of the present invention is to provide a pallet made of synthetic resin capable of suppressing bending.

[0006]

In order to solve the above problems, a synthetic resin pallet according to the present invention is provided with a front surface portion 1 and a back surface portion 2.
And a tubular girder 3 at the corner connecting the corners of the front surface 1 and the back surface 2 with each other, and an intermediate tubular girder 3 connecting the intermediate portions around the surface 1 and the back surface 2 with each other. , The front surface 1 and the back surface 2 are connected by the central cylindrical girder 3 which connects the central parts to each other,
Moreover, in a four-way synthetic resin pallet 6 in which fork insertion holes 4 are formed in a cross shape between the cylindrical girders 3, a position biased toward the central cylindrical girder 3 side within the cylindrical girders 3 at the corners. In addition, the mounting plate 20 is provided at a position on the back surface side of the tubular girder 3 at the corner, and the non-slip member 21 for grounding is attached to the mounting plate 20, and at least a part of the periphery of the mounting plate 20 and the surface The portion 1 and the reinforcing vertical walls 23 and 25 are integrally connected. By attaching the anti-slip member 21 to the mounting plate 20 at the position on the rear surface side of the tubular girder 3 at the corner portion, the anti-slip member 21 can be attached to a strong portion of strength, and the tubular girder 3 at the corner portion can be attached. The span S between the anti-slip members 21 can be shortened by mounting the anti-slip member 21 at a position deviated to the side of the cylindrical girder 3 in the center, and the bending of the pallet 6 when a load is applied can be suppressed.
Moreover, since at least a part of the periphery of the mounting plate 20 and the surface portion 1 are integrally connected by the reinforcing vertical walls 23 and 25, the reinforcing vertical walls 23 and 25 can be further reinforced so that the mounting plate 20 is not deformed. The non-slip member 21 can be attached to a stronger portion.

In addition, at the position deviated to the central tubular girder 3 in the tubular girder 3 at the corner, the reinforcing columnar wall 25 integrates the rectangular columnar reinforcing column portion 22 into the front surface portion 1 and the rear surface portion 2. It is also preferable that the mounting plate 20 is reinforced so that the mounting plate 20 is reinforced by the reinforcing column portion 22 having the reinforcing vertical wall 25. The reinforcing column portion 22 further reinforced is formed on the tubular girder 3 at the corner portion which is strong in strength, and the mounting plate 2 is formed by the reinforcing column portion 22.
By reinforcing 0, the mounting plate 20 can be provided more firmly, and the anti-slip member 21 can be attached to a strong portion.

It is also preferable that the mounting plate 20 is formed in the shape of a bar, and the bar-shaped mounting plate 20 is installed in a diagonal direction of the reinforcing column 22 on the back side inside the reinforcing column 22. By providing the cross-shaped mounting plate 22 so as to extend in the diagonal direction of the reinforcing column portion 22, the mounting plate 20 reinforced more strongly can be provided, and the anti-slip member 21 can be mounted to the stronger portion.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the accompanying drawings.

1 to 8 show an embodiment of the pallet 6 of the present invention. The pallet 6 is integrally injection-molded with a synthetic resin, and the front surface portion 1 and the rear surface portion 2 have four corner cylindrical girders 3 that connect the corner portions of the front surface portion 1 and the rear surface portion 2, and the front surface. Four intermediate tubular girders 3 that connect the intermediate portions around the portion 1 and the back surface portion 2 and one central tubular girder that connects the central portions of the front surface portion 1 and the back surface portion 2 They are connected by 3. As described above, the front surface portion 1 and the back surface portion 2 are integrally connected by the four cylindrical girders 3 at the corners, the four intermediate cylindrical girders 3 and the one central cylindrical girder 3. By doing so, the fork insertion holes 4 are formed between the cylindrical girders 3 to form a four-way pallet 6 having a cross girder shape. In addition, FIG.
As shown in FIG. 3, the lower opening 5 is formed in the back surface 2 of the pallet 6 at a position where the cross-shaped fork insertion holes 4 intersect.

As shown in FIG. 1, a crosspiece 10 is formed between the cylindrical girder 3 in the middle part of the surface part 1 and the cylindrical girder 3 in the center part, and the fork insertion of the surface part 1 is performed. A portion located above the portion where the hole 4 intersects vertically and horizontally (that is, the lower opening 5
A crosspiece 11 is formed in a portion (just above). Further, a crosspiece 12 is formed between the cylindrical spar 3 at the corner of the surface portion 1 and the cylindrical spar 3 at the middle portion.

As shown in FIG. 2, the crosspiece 10 of the front surface portion 1 is provided between the cylindrical spar 3 at the middle portion and the cylindrical spar 3 at the central portion of the rear surface portion 2.
The crosspiece 13 is formed so that it does not overlap vertically with
As shown in FIG. 5, both ends of the crosspiece 13 on the upper surface side (that is, the side facing the fork insertion hole 4) on the lower opening 5 side are inclined portions 7, and the horizontal portions 14 are formed between the upper ends of the inclined portions 7. Has become. A crosspiece 15 is formed between the tubular girder 3 at the corner of the back surface 2 and the tubular girder 3 in the middle part, and the crosspiece 15 is located on the upper surface side (that is, the side facing the fork insertion hole 4). The end portion on the lower opening portion 5 side and the end portion on the fork insertion side are respectively inclined portions 7, and a horizontal portion 14 is provided between the upper ends of both inclined portions 7.

Therefore, on the upper surface of the back surface portion 2, inclined portions 7 are formed at the entrances of the fork insertion holes 4, respectively, and along the four sides of the four lower openings 5 formed on the back surface portion 2. An inclined portion 7 is formed in each case.

Here, the cylindrical girder 3 at the corner of the surface portion 1
And the middle cylindrical tubular girder 3 and the middle cylindrical tubular girder 3 and the central cylindrical tubular girder 3 are connected to the upper surface of the inclined portion 7 of the rear surface 2 at a position corresponding to the upper position. An elongated opening 8 for removal is formed.

Cylindrical girders 3 are provided at four corners of the pallet 6, and the cylindrical girders 3 at the corners allow the front surface 1 and the back surface 2 to be formed.
, And the cylindrical girders 3 at the corners are mainly constituted by a peripheral vertical wall 24 having a rectangular cylindrical outer periphery. In the case of the present invention, the tubular girder 3 includes the peripheral vertical wall 24 as well as the peripheral vertical wall 24.
Reinforcing vertical walls 25 and 26 are provided between the front surface portion 1 and the rear surface portion 2 so as to partition the portion surrounded by. The peripheral vertical wall 24 and the reinforcing vertical walls 25 and 26 are shown by thick broken lines in FIG. The reinforcing vertical wall 25 is provided in the inner corner of the peripheral vertical wall 2 on the side of the cylindrical girder 3 in a substantially L-shape when viewed from above. And 25 form a substantially rectangular tubular reinforcing column portion 22. The reinforced vertical wall 26 is the reinforced vertical wall 2
5 are provided in a diagonal direction so as to connect the corners of No. 5 and the outer corners of the peripheral vertical wall 24.

The mounting plate 20 is provided on the back side of the reinforcing column portion 22.
Are provided integrally. In the case of this example, a bar-shaped mounting plate 2
0 is installed in the diagonal direction of the reinforcing column portion 22 orthogonal to the reinforcing vertical wall 26. One of the side edges of the mounting plate 20 and the surface portion 1 are integrally connected by a reinforcing vertical wall 23. The reinforcing vertical wall 23 is provided with through holes 27 for reducing the weight, if necessary. Mounting plate 2
0 is laid diagonally on the back side of the reinforcing column portion 22 reinforced by the reinforcing vertical walls 25 and 26 as described above, and is further firmly supported by being supported by the reinforcing vertical wall 23.

A cylindrical mounting tube 28 is integrally provided at the center of the mounting plate 20, and a rubber anti-slip member 21 called a grommet is press-fitted into the mounting tube 28 and mounted. The mounting plate 20 is also provided with a through hole 29 for reducing the weight. As described above, the anti-slip member 21 mounted on the mounting cylinder 28 of the mounting plate 20 is grounded to prevent slipping when the back side of the pallet is placed down. Tubular girder 3
Since the anti-slip member 21 is located at a position biased to the side, the span S between the anti-slip members 21 is shortened, and it is possible to suppress the bending of the pallet 6 when a load is placed on the pallet 6 and a load is applied. it can.

As described above, the anti-slip member 21 when the pallet 6 is grounded is provided on the back surface side of the pallet 6, but the front surface side of the pallet 6 is also prevented from slipping a load placed on the pallet 6. An anti-slip member is provided to prevent this. That is, the mounting cylinders 30 are provided so as to be scattered at a plurality of positions on the surface portion 1, and the anti-slip members are press-fitted and mounted to the mounting cylinders 30.

In the above-mentioned example, the mounting plate 20 for mounting the anti-slip member 21 is formed into a bar shape and the reinforcing column portion 22 is formed.
The example in which the bar-shaped mounting plate 20 is reinforced by the reinforcing vertical wall 23 and the reinforcing vertical wall 25 of the reinforcing column portion 22 has been described, but the rectangular plate-shaped mounting is performed on the back surface side of the reinforcing column portion 22. The plate 20 is integrally provided, and the mounting plate 20 is reinforced by the vertical wall 2
It may be reinforced with 5.

[0020]

As described above, the invention of claim 1 of the present invention is located at a position biased toward the central cylindrical girder side in the cylindrical girder at the corner and on the back side of the cylindrical girder at the corner. Since a mounting plate is provided and a non-slip member for grounding is attached to this mounting plate, a strong strength portion can be obtained by mounting the anti-slip member to the mounting plate at the position on the back side of the tubular girder at the corner. The non-slip member can be attached to the non-slip member and the span between the anti-slip members can be shortened by attaching the anti-slip member to the central cylindrical girder side of the corner portion, which is biased toward the tubular girder side, and the load is applied. The bending of the pallet at this time can be suppressed, and at least a part of the peripheral edge of the mounting plate and the surface portion are integrally connected by the reinforcing vertical wall, so that the mounting plate is not deformed by the reinforcing vertical wall. Can be further reinforced to prevent slippage Those that can be attached to the more rigid parts.

The invention of claim 2 of the present invention is the invention of claim 1.
In the corner of the cylindrical girder, a rectangular columnar reinforcing column is formed by a reinforcing vertical wall so as to be integrally connected to the front surface portion and the rear surface portion at a position deviated to the central cylindrical girder. Since the above-mentioned mounting plate was reinforced by the reinforcing column portion having the vertical wall, it is necessary to form the reinforcing column portion which is further reinforced on the cylindrical girder of the corner portion which is strong in strength, and reinforce the mounting plate with this reinforcing column portion. Thus, the mounting plate can be provided more firmly, and the anti-slip member can be attached to the strong portion.

The invention of claim 3 of the present invention is the invention of claim 2
In the above, since the mounting plate is formed in the shape of a bar and the bar-shaped mounting plate is installed on the back surface side in the reinforcing column part in the diagonal direction of the reinforcing column part, a more strongly reinforced mounting plate can be provided, and the slip preventing member can be provided. Can be attached to a stronger part.

[Brief description of drawings]

FIG. 1 is a plan view of a pallet of synthetic resin according to the present invention.

FIG. 2 is a bottom view of the above.

FIG. 3 is a front view of the above.

FIG. 4 is a side view of the above.

5 is a cross-sectional view taken along line XX of FIG.

6 is a cross-sectional view taken along line YY of FIG.

FIG. 7 is an enlarged plan view of a tubular girder portion at one corner of the same pallet.

8 is a sectional view taken along line ZZ in FIG.

FIG. 9 is an explanatory diagram illustrating a problem of a conventional example.

[Explanation of symbols]

1 surface 2 Back side 3 tubular girders 4 Fork insertion hole 6 pallets 20 Mounting plate 21 Anti-slip member 22 Reinforcement column 23 Reinforced vertical wall

Claims (3)

[Claims] 1. A cylindrical girder at a corner where the front surface portion and the back surface portion connect the corner portions of the front surface portion and the back surface portion, and an intermediate portion that connects intermediate portions around the front surface portion and the back surface portion. A four-sided synthetic resin insert that is connected by a cylindrical girder and a cylindrical girder in the central portion that connects the central parts of the front surface and the back surface, and has fork insertion holes formed in a double girder pattern between the cylindrical girders. In the palette of
A mounting plate is provided at a position biased toward the central tubular girder side in the corner tubular girder and at a position on the back side of the tubular girder at the corner, and a non-slip member for grounding the mounting plate is provided. Wear
A pallet made of synthetic resin, characterized in that at least a part of a peripheral edge of a mounting plate and a surface portion are integrally connected by a reinforcing vertical wall. 2. A corner columnar reinforcing columnar portion is formed by a reinforcing vertical wall so as to be integrally connected to the front surface portion and the back surface portion at a position deviated to the central cylindrical girder in the corner cylindrical girder. The pallet made of synthetic resin according to claim 1, wherein the mounting plate is reinforced by a reinforcing column portion having the reinforcing vertical wall. 3. The pallet made of synthetic resin according to claim 2, wherein the mounting plate is formed into a bar shape, and a bar-shaped mounting plate is installed in a diagonal direction of the reinforcing column part on the back side inside the reinforcing column part. .